This color contains the following pigments:

PY35:1—Cadmium-Barium Yellow

Pigment Type

inorganic

Chemical Name

cadmium zinc lithopone

Chemical Formula

CdSZn + BaSO4

Properties

Cadmium Yellow is brilliant, dense, and opaque, with good tinting strength and very high hiding power. It is the artist’s principal bright yellow and is available in light, medium, and dark shades. The deeper shades appear deep orange and have the greatest tinting strength. It is slow-drying in oil form and is used in both oil and watercolor form. It cannot be mixed with copper-based pigments. A clean Cadmium Orange is created when Cadmium Yellow is mixed with Cadmium Red. Hues vary by brand. Cadmium pigments have been partially replaced by azo pigments, which are similar in lightfastness to the cadmium colors, cheaper, and non-toxic.

Toxicity

Cadmium Yellow is a known human carcinogen. It is extremely toxic if inhaled and slightly toxic if ingested. Barium sulfate is extremely insoluble in water, and thus is not biologically active. It is used medically as a contrast medium in radiological procedures.

History

Cadmium Yellow PY35:1 is cadmium yellow pigment that contains 15% or more barium sulfate. It is used to create a less expensive alternative to PY35.